Pump fire extinguisher



March n ,wm

C. NUHRING PUMP FIRE EXTINGUISHER Filed Oct. 18

FWG-4 l 1 u l f I l u I l l l I u l f I l u I zeef INVENTOR CHARLESNUHRMM@ ATTORNEYS enemies inn. 11, 192e. Latte,

CHAR-LES NUHRING, O3" CJINCINNAT, (JI-X10.

PUMP FIRE EXTINGUISHER.

Application filed October 18, 1921.. Serial No. 508,488.

To @ZZ whom ri may conce/i171: trated in the accompanying fflrawings.andV 1Beit known tlat 1. CnanLns NUriRiNG, a tinally pointed out in theappended claims. citizen of the United States, residing at Cin- Asdisclosed herein, the invention .is decinnati, in the countyv otHamilton and Statey lineated in one otl its practical termsA` but 5ptOhio, have invented certain neiv and usethis disclosure is to be, takenonlyT in an 6U "ful improvements in Pump Fire Extin- Villustiativerather than a restrictive sense.

guishers, of Which the following is a speciii- 1n the drawings-- cation.Fig. 1 is a vertical transverse set-,tional The present inventionrelates to iinprovevievv oi' a tire-extinguisher constructed 'in ac-Vments in chemical tii lxtingnishei's ot the cordance with the present,invention; 65

"z e if* e. .0'. a is a o'i i an view `iereoi': poitabl tp llia 0 t l 1ltl The Object. ot' the invention is to improve is an inverted plan vievvot the et:- the construction o't portable extinguishers to ting'uisher;render them more ett'ective in operation by Fig. et is a fragmentarytransverse seemincluding therein a pumping` device tor the tional vien'ot the base ot' the tank taken at 70 ""discharge otl the chen'iicalextinguishing; right angles to the line ot section ot 1:

agent. The inclusion otl such pumping' ele- YFig. 5 is a detailsectional view on the line nient enables expulsion of the agent underot' Fig'. 1 certain parts being' oinltted. positive impulses ot thepump, as distin- Reterring in detail to the accompanying' 2Qpguishedtroni the pressure created by a gas dra-Wings.l the in'iii'ieral 10designates the 75 ""igeiierated bv the eoinn'iingling et' an acid tankot the hereindescribed extinguisher. and an alkaline solution, therebyvassuring' This is formed pifet'erabl3v ot'copper, as is at all times theproper discharge ot the eX- usual with chemical iire-extingriiishers.The tinguishing agent when required tor use and top of the tank isexteriorlv screw threadwniaintaining' uniform pressure on the agenty ed,and engaging' said threaded end is a 80 throughout the entire operationot emptying cap 11 having` a depending' flange which is the tank. Thisobviouslv is advantageous inteariorlY screw threadef' tor cooperationover the pressure esta gas vvhieh gradually with the Vthreads ot thetank. The cap 11 diminishes, and insures to the. user adequate alsopreferably is provided with a ring; 152 discharge ot' the extinguishingagent to the which constitutes a handle 'for the Couven- 85 limit of thecontents thereot 'within the tank. ient ii'ianipulation ot theextinguisher.

A further Object of the invention is to At the central portion ot thecapl 11 is provide a pump lire-extinguisher ot' the torined an opening`about which, at the ingeneral Class referred to wherein is embodied nerside ot the cap. is a dependintel annular convenient and'siinple meansJfor preventing tlange 123. said :fiance beine' integral with 90 thepump beeoinine' air-bound in its operathe nip, and arranged Within saidtiange 13. tion ot discharging the tank, and ikevise and suspended tronithe cap 11, is the elont'or precluding deterio ation o't the chemicalgated barrel 14. ot pump. which barrel has extinguishing agent Withinthe tank either its lower 'end screiv threaded and to which 40 h vevaporation or b v absorption of i'noisture is connected the nip-ple 15ot a valve cage 95 troni the atmosphere. The strength o't the screen 15.The upper end ot the nipple 15 agent, therefore, is preserved. lconstitutes a alve seat. and cooperating;

Furthermore, the invention also contenti 'l `reivithV is a vertieallvmovable valve 17 plates such an organization and correlation which restsupon said seat and controls ot the parts ot' the extinguisher as torender communication between the loiver end ot the 100 the lattercompact, easilyv accessible tor oplwrrel 1li and the interior ot thetank 10. eration when such is required.4 and readilv T he valve 1T has astem 1S extending' doivnreplaced in eventot' impairment ot the erivardlvthere. 'n a n .1, to which is connected nushe Y a head 19 bj.' 'ch theupviard inoveinent il-.lith these general objects in view, and of vthevalve 1T is limited. 10") others ivhich Will appear as the nature ofpistonY rod is also arrangei'l 'Within the improvements is betterunderstood, the the barrel the upper end of said rod ei;- inventionconsists snbstan'tiallv in the novel tending through the centralopening' of the construction, combination and arrangement cap 11 andprojecting;- above said cap, and x ot parts hereinafter fully described,illusarranged at 'the loiver end ot said rod 20 is u( a valve cage 21having` a series of lateral ports 22, a ball valve Q3 beingjr locatedWithin said cage 21. The valve QS controls the passage '224. whichextends through a piston 2a connected at the lower end ot the cage Thusit vvill be seen that the valve 1T will be drawn upwardly on theupstroke ot the piston rod 20, While the valve 2? seats on suchupstroke, the downstroke ot the rod 2l) causing the valve .1T to seat,While the vaive becomes unseated and establishes cormnumcation betweenthe passage ot the piston 25 and the space within the barrel 1% abovesaid piston.

The head of the barrel 14 is tapped by a discharge pipe 26, the innerend of which pipe is detacluiblj,v connected to the head of the barrel14, as by a suitable screw threaded connection7 said pipe 2G extendingthrough a packing lland 2T formed in the Wall o1 the tank 1f). andthereby providing' a properly fitted joint between the discharge pipe 26and the tank 10. hose Q6 is connected to the outer end ot the dischargepipe Q6 tor directing' the extinguishing' agent as it is discharged fromthe tank.

:it a suitable point in the rap 11 is jformed a filling' opening inwhich is fitted a closure plug1 Q87 and at opposite points With respectto the central opening; oit said cap is also provided a pair ot' ventopenings 29. The purpose ot these openings is to admit air to the tank10 under proper conditions of use, and thereby to prevent the. pumpWithin the tank becoming air bound. At the eX- terior ot the piston rod20, and disposed above the cap 11, is a head 30 havingr oppositelydisposed handles 3l at its upper portion. while at its lower portion isvformed a pair ot oppositely disposed locking' arms 32. These arms, whenpositioned over the vents 29. serve to close said vents and preventadmission ot air to the interior of the tank 10. This precludesdeterioration ot' the chemical extinguisher Wit-hin the tank either byabsorption of moisture from the atmosphere or by evaporation. Thelocking` arms cooperate 'with a pair of oppositely-disposedreversely-arranged lockingv luf-js 3 each of which lockinglugs 33 has anoverhanging flange under Which the outer extremity of one of thelocking; arms 32 is adapted to tit. The under surface of the .flangesot' the lugs is Wedge shaped, and by reason ot' the reverse arrangementof said lugs with respect to each otherit Will be apparent that as thelocking arms 32 pass beneath said tiene-es the wedge shape oit thelatter will force the locking` arms into tight engagement With thecan-11, and thus eftectually close the vents 2S). This Wedgine' actionhas the 'further function of forcing; the piston Q5 into entrainementwith the upper end ot the valve 121 vvl 'eh action serves to lock saidvalve upon its Seat7 and thereby prevent displacement ot said valve 1Tfrom the latter.

To anchor the extinguisher during the operation otl the pump one side ofthe base thereoi is provided With an opening 34, and extending' acrossthe lower end of thebase, in proximity to said opening Zf-l, is a Web21,5 which constitutes a rest for the toot of the operator Which isintroduced to the opening 53e. This construction enables the applicationof the tootto the web 35 in order to hold the extinguisher in positionduring the pumping; operation.

ln the operation ot the herein described extinguisher the same is filledby the removal ot the closure plug' 1C., at which time the desiredchemical extinc'uishing agent may be introduced to the interior of thetank 1U. With the plugl 28 titted to its opening in the cap 11 and thepiston rod 20 moved to the limit ot its inward motion, the piston willcontact with the valve 17. Rotation nov: exiertefl upon the piston rod20 will drawthe lockinpl arms 32 into engagement with the tlaneiedlocking lugs. which mar-vement positions said locking arms over thevents QSL sealing` the interior of the tank l() trom -communication withthe 'atmosnher-L. during which rotation ofthe rod 20 the piston willalso bind the valve 17 to its seat. lVhen the extinguisher is requiredtor use. it is but necessary to rotate the piston rod Q0 to release thelockingarms 32 troni engagement with the lugs and in this movement thevalve 17 is rotated upon its seat so that in the event of corrosion.which may possibly arise by reason ot' the lhemical extiim'uishina agentWithin the tank 10. the valve 17 will be Jfreed and rendered capable otproper movement in the action oi the pump. ll?eciprocat-ory move- .mentnow being' imparted to the rod 20 the e\tingruisliinaagent will be drawn:trom the tank 1() into the pumpbarrel 14 and discharged therefromthrough the pipe 26 and the hose 526 to the point of service, Thepumping action continues until the tank 10 has be'ome depleted ot' theextinguishing agent. whereupon said tank may be illed airain. in themanner indicated, and is thus. charged for further use. Y

ln the event the separation of the parts is required, it .is simplynecessary to free the locking` arms 32 from engagement with the lu'rsdetach the head P30 from the rod 20.7and disconnect the. discharge pipeQG 'from the head ot the pump barrel 14. The parts then may be Whollvremoved from the tank 10 and readily separated.

l. claim:

1. .ln a tire-extinguisher of the class described. the combination witha tank, of a cap theretor pr vided with a pluralitv of vent Vopeningslcadi e into the top of the tank a pumping attachment associated withsaid cap and arranged Within said tank, means associated with saidpumping attachment for closing said vent openings, locking meanscooperating with said closing means to hold the latter in closedrelation to said rent openings, and a. discharge pipe connected to saidpumping attachment.

2. In a tire-extinguisher of the class described, the combination With atank, of a cap therefor provided with a plurality of vent openings, apumping attachment associated With said cap and arranged Within saidtank, means associated with said pumping attachment for closing saidopenings, locking means for holding said closing means in closedrelation to said vent openings, a valve included in said pumpingattachment for controlling communication between the lat-ter and theinterior of said tank, and means for locking said valve upon its seatsimultaneousl;7 with the locking of the closing means for controllingsaid rent opei'iings.

3. In a tire-extinguisher of the class described, the combination With atank. of a cap therefor having a: vent therein leading into the top ofthe tank, a pun'iping attachment associated with said cap, means foractuating said pumping attachment, means associated with said actuatingmeans for closing said vent, means for locking said closing means inposition over said vent, and a. discharge pipe connected to said pumpingattachment.

4. In a tire-extinguisher of the class described, the combination with atank, of a cap therefor having a ventI therein, leading into the top ofthe tank, a pumping attachment suspended from said cap Within said tank,means at the exterior of said cap for actuating said pumpingattachn'ient, means also arranged at the exterior of said cap andassociated with said actuating means for closing said vent, means forlocking said closing means in position over said vent, and a dischargepipe connected to said pumping attachment.

5. l'n a tire-extinguisher of the class described, the combination Witha tank, of a cap therefor having a vent therein leading into the top ofthe tank, a pumping attachment associated with said cap, 'means foractuating said pumping attachment, means associated with said actuatingmeans for closing said vent. a locking lug carried by said cap and withWhich said closing means cooperate for locking the closing means inposition over said vent, and a discharge pipe connected to said pumpingattachment.

In a tire-extinguisher of the class described, the combination With atank, of a cap therefor havingl a vent therein, leading into the top ofthe tank, a pump barrel suspended from said cap Within the tank, avalved piston mounted in said pump barrel,

a piston rod connected to said piston and extending through saidcap,means associated With said piston rod for closing said vent, meansfor locking said closing means in position over said vent, and adischarge pipe connected to said pump barrel.

7. In a .tire-extinguisher of the class described, the combination witha tank, of a cap therefor having a vent therein, leading into the top ofthe tank, a pump barrel suspended from said cap Within said tank, acontrolling valve arranged at the lower end of said pump barrel, apiston rod connected to said piston and projecting through said cap,means associated With said piston rod for closing said vent, means forlocking said closing means 'in position over said vent` said piston rodwhen said closing means are locked in position to close the vent servingalso to lock the controlling valve of the pump barrel in engagement withits scat, and a discharge pipe connected to said pump barrel.

8. ,in a` tire-extinguisher of the class descrita-al, the combinationwith a tank, of a cap therefor having a vent therein, a pmnpingattachment associated with said cap, means for actuating said pumpingattachment, a lockingarm associated with said pumping attachment forclosing said Vent, a locking lug` carried by said cap for holding saidlocking arm in closed position over said vent, and a discharge pipeconnected to said pumping attachment.

9. ln a tire-extinguisher of the class described, the combination With atank, of a cap therefor having a pluinlitj7 of vents therein leadinginto the top of the tank, a pumping attachment associated With said capand suspended thereb;v Within said tank, means for actuating Withpumping attachment, locking arms associated With said actuating meansfor closing said vents, a pliralitiv of locking lugs carried b v saidcap and with which said locking arms cooperate for holding the lockingarms in closed position over said vents, and a discharge pipe connectedto said pumping att a chine-nt.

l0. In a fire-extinguisher of the class described, the combination witha tank, of a cap therefor having a plurality of vente therein leadinginto the top of the tank, a. pump barrel depending from said cap, avalred piston arranged Within said pump barrel, a piston rod connectedto said piston and passing through said cap. a valve seat arranged atthe lower end of said barrel, a valve associated With said seat andcontrolling communication between the interior of the tank and theinterior of said barrel, oppositelv disposed locking arms carried b vsaid piston rod at the exterior of said cap and serving to close saidvents, and a plurality of oppositely disposed overhanging locking lugscarried by said oep and with which said locking' arms nre adapted toengage to held the looking urine in closed position over seid vente, theengaging faces of the locking arms und the locking lugs being beveled toexert u Wedging notion 'when seid arms ure brought into engagement withsaid luge, wherebf.- to maintain the locking arms over the vents of thecap und also to engage said piston with the valve controllingcommunication between the tank and the pump burrel and thereby lock Saidvalve upon its Seat concurrently with the locking?r of seid arms oversaid Vents.

11. In e. [ire-extinguisher of the class described, the combination witha tank, of d Aeztp therefor hztving` e pluielityv of vente thereinlending into the top of the tank', e pump barrel dependingl from seidCep und provided ut its lower end with e vulve See-t` :t valvetio-operating with Said seat to control comnnlnication between theinterior ot' the tank and the pump barrel. e rulved piston mounted formovement within seid herrel, a piston rod connected to Suid piston andextendingT through said eup` :l handle deteeluxbly connected to seidpiston rod end provided with oppositely disposed looking :irme adaptedto tvo-operate with the vents o the mp to close said vente, oppo'sitelydisposed clamping' lugs also Carried by the Cep und with 'which SeidIlocking urine-copper :ma the engaging trices oi' seid locking urine andSuid locking' lugs being beveled to exert wedg'ing action when Seidlockingr firms are 4brought into engugenient with seid lugs` Wherelnj toclump the locking arms into engagement With Suid Cep andsin'iultaneouely exert pressure upon the vulve oli the pump barrel tohold the letter to its seat and. ore-- vent communieetion between thetank und i f CHARLES NUHRING.

lVitnesses:

ADAM Lo'rz. P). D. XVESTENFELDER.

Certificate or Correction.,

It is hereby certified that in Letters Patent No. 1,486,600, grantedMarch 11, 199A, upon the application of Charles Nuhing7 of Cincinnati,Ohio, for an iinprovenient in Pump Fire Extinguishers, an error appearsin the printed specii'cation requiring, Correction as 4follows: Page 3,line 91, claim 8, after the Word therein insert the phrase and commaleading into the op of the tfmu' and that the said Letters Patent shouldbe read with this Correction therein that the sanie inay conform to therecord of the Case in the Patent Office.

Signed and sealed this 6th da@7 of May, A. l). 1924.

[SEAL] KARL FENNING,

Acting Uowmm'ssz'oner of Patents.

